1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3986df1e2da2b3279371025ba57a5cb719946d8e6fb30207072239bba0658afe. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce4292c6-6526-4324-b1b4-c5a87684c632.json and https://artists.proofprofile.net/proofs/artist/ce4292c6-6526-4324-b1b4-c5a87684c632.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb73e01abdeef09d1720b66ee23325a899b91cd9bec146e046c8d7f9f88e1e3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:55:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1614653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9f487c3521e6e69ad10f0c819bb86cee48e4e428d618f0623247a1ecd78ebd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACR1614654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2302cd60b68244fd1331cf9609a85e976afc4b77a4616752da7bc721c28f06. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2020816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c44cdb6d560b85580acf535e48ed5a9c1391a5a8cfa237a935a8f712e023bc2. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADX1877968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a9958dd6049d077c390ea26296b790fc59e5a177e4f12aa609695c35ffcf6b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2253790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990b2b8d04008799beaff0c29619208845b3b2a6b1591cc5b7e91b89d5ed7ab7. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:35:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2253791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9129bed3caee328eb896f256fa07478aafac9faaf9d56b913b984cd52face9e2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2289746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12133803c848ff62400d9dba5ea4c50166ab4e82c66a665da8d5aa8dbda3491. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2253793.
GRAMMY AWARD WINNING ALBUM IT'S ALL A BLUR